This template provides the declension of most Bulgarian masculine nouns that form the plural with -ове(-ove) (синове(sinove), богове(bogove), etc). The first parameter is used with noun that have the mutating vowel "yat". The second parameter is optional, it's the irregular vocative form (that is, the vocative isn't formed by just adding -е to the end of the nominative form: сине(sine)) and is used only when the noun has an irregular vocative form. For example, {{bg-noun-m-ove|брег}} produces the declension of the noun бряг(brjag), and {{bg-noun-m-ove||боже}} produces the declension of the noun бог(bog).